Atlas of Hillforts of Britain and Ireland

WA1533 Cwm Berwyn, Radnorshire

LiDAR 1m DTM Hillshade

LiDAR 1m DTM Hillshade

Satellite Imagery

Satellite Imagery

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HER:  Clwyd Powys 1625 (None)

NMR:  SO 05 SE 9 (305826)

SM:  RD123(POW)

NGR:  SO 07275 54830

X:  307275  Y:  254830  (OSGB36)

Summary

Small inland promontory fort located on a SE-facing spur promontory high in the Carneddau above the River Wye and its tributary the River Edw above Builth Wells. Steep or very steep surrounding slopes, moderate to NW. Measures c. 75m by 75m internally, with internal area 0.35ha, and 120m N-S by 80m externally with area c. 0.96ha. Defences cut off the promontory at a saddle from the adjoining upland on the N and NW, with natural slopes defending the remainder. Defined by curving inner bank, to 5m high externally, and external ditch with counterscarp, and inner quarry hollow. Possible stone revetment revealed. Gap of c. 20m to outer bank to 1.7m high externally and ditch. Entrance through outer bank on NW side, then route runs parallel with inner bank to enter interior through inner bank on W. Inner entrance faced by possible hut platform. Possible c. 10 hut platforms in interior, all c. 5m diameter. Moorland rough grazing. Some erosion of banks. On 1st Ed. OS map (1889). Minimal investigations, undated.

Status

Citizen Science:  ✗

Reliability of Data:  Confirmed

Reliability of Interpretation:  Confirmed

Location

X:  -373777  Y:  6833439  (EPSG: 3857)

Longitude:  -3.357694724764084  Latitude:  52.18386322419174  (EPSG:4326)

Country:  Wales

Current County or Unitary Authority:  Powys

Historic County:  Radnorshire

Current Parish/Community/Council/Townland:  Glascwm

Monument Condition

Some erosion of banks.

Condition:
Extant   ✓
Cropmark   ✗
Likely Destroyed   ✗

Land Use

Moorland rough grazing and bracken.

Current Use:
Woodland   ✗
Commercial Forestry Plantation   ✗
Parkland   ✗
Pasture (Grazing)   ✓
Arable   ✗
Scrub/Bracken   ✓
Bare Outcrop   ✗
Heather/Moorland   ✓
Heath   ✗
Built-up   ✗
Coastal Grassland   ✗
Other   ✗

Landscape

Hillfort Type

Small inland promontory fort located high in the Carneddau above the River Wye and its tributary the River Edw above Builth Wells.

Type:
Contour Fort   ✗
Partial Contour Fort   ✗
Promontory Fort   ✓
Hillslope Fort   ✗
Level Terrain Fort   ✗
Marsh Fort   ✗
Multiple Enclosure Fort   ✗

Topographic Position

Position:
Hilltop   ✗
Coastal Promontory   ✗
Inland Promontory   ✓
Valley Bottom   ✗
Knoll/Hillock/Outcrop   ✗
Ridge   ✗
Cliff/Plateau-edge/Scarp   ✗
Hillslope   ✗
Lowland   ✗
Spur   ✓

Dominant Topographic Feature:  Spur

Aspect:
North   ✗
Northeast   ✗
East   ✗
Southeast   ✓
South   ✗
Southwest   ✗
West   ✗
Northwest   ✗
Level   ✗

Altitude:  390.0m

Boundary

N/A


Dating Evidence

None

Reliability:  D - None

Principal Activity:
Pre 1200BC   ✗
1200BC - 800BC   ✗
800BC - 400BC   ✗
400BC - AD50   ✗
AD50 - AD400   ✗
AD400 - AD 800   ✗
Post AD800   ✗
Unknown   ✓

Other Activity:
Pre Hillfort:   None
Post Hillfort:   None

Evidence:No related records

Investigation History

On 1st Ed. OS map (1889). CPAT defended enclosures survey 2006.

Investigations:
1st Identified Map Depiction (1889):   OS map.
Other (2006):   CPAT defended enclosures survey.

Interior Features

Possible c. 9 hut platforms in interior, all c. 5m diameter. Inner entrance also faced by possible hut platform.

Water Source

Stream 0.25km outside fort.

Source:
None   ✓
Spring   ✗
Stream   ✗
Pool   ✗
Flush   ✗
Well   ✗
Other   ✗

Surface

Possible c. 9 hut platforms in interior, all c. 5m diameter. Inner entrance also faced by possible hut platform.

Interior Features (Surface):
No Known Features   ✗
Round Stone Structures   ✗
Rectangular Stone Structures   ✗
Curvilinear Platforms   ✓
Other Roundhouse Evidence   ✗
Pits   ✗
Quarry Hollows   ✗
Other   ✗

Excavation

None

Interior Features (Excavation):
No Known Excavation   ✓
Pits   ✗
Postholes   ✗
Roundhouses   ✗
Rectangular Structures   ✗
Roads/Tracks   ✗
Quarry Hollows   ✗
Other   ✗
Nothing Found   ✗

Geophysics

None

Interior Features (Geophysics):
No Known Geophysics   ✓
Pits   ✗
Roundhouses   ✗
Rectangular Structures   ✗
Roads/Tracks   ✗
Quarry Hollows   ✗
Other   ✗
Nothing Found   ✗

Finds

None

Interior (Finds):
No Known Finds   ✓
Pottery   ✗
Metal   ✗
Metalworking   ✗
Human Bones   ✗
Animal Bones   ✗
Lithics   ✗
Environmental   ✗
Other   ✗

Aerial

None

Interior Features (Aerial):
APs Not Checked   ✓
None   ✗
Roundhouses   ✗
Rectangular Structures   ✗
Pits   ✗
Postholes   ✗
Roads/Tracks   ✗
Other   ✗

Entrances

Entrance through outer bank on NW side, then route runs parallel with inner bank to enter interior through inner bank on W. Inner entrance faced by possible hut platform.

Total Number of Breaks Through Ramparts:  
2:   None

Number of Possible Original Entrances:  
2:   None

Guard Chambers:  ✗

Chevaux de Frise:  ✗

Entrances:
1. Simple Gap (North west):   Outer entrance.
2. Simple Gap (West):   Inner entrance.
2. Over-lapping (West):   From outer entrance, route runs parallel with inner bank to enter interior through inner bank on W.

Enclosing Works

Defined by curving inner bank and external ditch with counterscarp, and inner quarry hollow. Gap of c. 12m to outer bank and ditch.

Enclosed Area:
Area 1:   0.35ha.
Total:   0.35ha.

Total Footprint Area:  0.96ha.

Ramparts

None

Multi-period Enclosure System:
✗   None

Ramparts Form a Continuous Circuit:
✗   None

Number of Ramparts:  
NE Quadrant:   1
SE Quadrant:   0
SW Quadrant:   0
NW Quadrant:   1
Total:   1

Morphology

Current Morphology:
Partial Univallate   ✓
Univallate   ✗
Partial Bivallate   ✗
Bivallate   ✗
Partial Multivallate   ✗
Multivallate   ✗
Unknown   ✗

Detailed Morphology:
Partial Univallate   ✗
Univallate   ✗
Partial Bivallate   ✗
Bivallate   ✗
Partial Multivallate   ✗
Multivallate   ✗

Surface Evidence

Possible stone revetment revealed on N face of inner bank.

Enclosing Works (Surface):
None   ✗
Earthen Bank   ✗
Stone Wall   ✓
Rubble   ✗
Wall-walk   ✗
Evidence of Timber   ✗
Vitrification   ✗
Other Burning   ✗
Palisade   ✗
Counter Scarp Bank   ✓
Berm   ✗
Unfinished   ✗
Other   ✗

Excavated Evidence

None

Enclosing Works (Excavation):
None   ✗
Earthen Bank   ✗
Stone Wall   ✗
Murus Duplex   ✗
Timber-framed   ✗
Timber-laced   ✗
Vitrification   ✗
Other Burning   ✗
Palisade   ✗
Counter Scarp Bank   ✗
Berm   ✗
Unfinished   ✗
No Known Excavation   ✓
Other   ✗

Other

Gang Working:
✗   None

Ditches:
✓   None

Number of Ditches:  2

Annex:
✗   None

References

Royal Commission on the ancient and historical monuments and constructions in Wales and Monmouthshire 1913. An inventory of the ancient monuments in Wales and Monmouthshire, III, County of Radnor, No. 435, London: HMSO.

Savory, H.N. 1952: List of hill-forts and other earthworks in Wales, IV, Radnorshire, Bull Board Celtic Stud, 16, 76.

Silvester, R.J. and Hankinson, R. 2006. Defended enclosures in Radnorshire. Project report, CPAT Report 781, Welshpool: CPAT.



Terms of Use

This work is licensed under CC BY-SA 4.0 and should be cited as:

Lock, Gary and Ralston, Ian. 2024. Atlas of Hillforts of Britain and Ireland. Available at: https://hillforts.arch.ox.ac.uk


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